Nau Verde will install the first wet spinning unit for hemp and flax in Santo Tirso


Published


October 9, 2025

Nau Verde, an innovative start-up focused on the creation of the first 100% flax and hemp spinning mill in Portugal, is preparing to set up shop in the town of Rebordões, in the municipality of Santo Tirso, in a former industrial building of 15,000 square meters that housed units operated by Riopele and Filatex.

The company intends to return linen yarn production to Europe, currently concentrated in Asia, with an investment of almost 112 million euros that includes the creation of 250 jobs.

Project of the first wet spinning mill for hemp and linen in Rebordões – @portugaltextil / Instagram

Nau Verde, which is reviving flax and hemp spinning, is already building this first wet spinning unit, which it believes will mark a turning point for the Portuguese and European textile industry, the company stated in an Instagram post.

The start-up coordinates the Lusitano Project, in which 17 partners participate, including Fibrenamics, based in Guimarães, which is committed to sustainable yarns produced from natural flax and hemp fibers. The project uses advanced processes to improve fiber quality and produce high-performance yarns for the premium segment, according to a LinkedIn post by CEO Isabel Carneiro, vice president of AEMinho.

Isabel Carneiro, general director of Nau Verde, at the construction site of the new factory
Isabel Carneiro, general director of Nau Verde, at the construction site of the new factory – @portugaltextil / Instagram

Nau Verde also states that the environmental impact of the process has been reduced by between 50% and 60%, thanks to chemical and enzymatic treatments that are already in the industrial validation phase, reports Jornal de Negócios.

With the support of the PRR, within the framework of the Mobilization Agendas, Nau Verde aims to contribute to the development of the European textile industry by combining innovation, sustainability and industrial transformation, concluded the general director on LinkedIn.

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